text: The earliest systematic exposition of the Vaisheshika is found in the Vaisheshika Sutra| of  (or ). This treatise is divided into ten books. The two commentaries on the ,  and  are no more extant. Prashastapada|’s  (c. 4th century) is the next important work of this school. Though commonly known as  of , this treatise is basically an independent work on the subject. The next Vaisheshika treatise, Candra’s  (648) based on ’s treatise is available only in Chinese translation. The earliest commentary available on ’s treatise is ’s  (8th century). The other three commentaries are ’s  (991), Udayana’s  (10th century) and ’s  (11th century). ’s  which also belongs to the same period, presents the  and the  principles as a part of one whole. ’s  on  is also an important work.